Metal mold for concrete blocks



June 12, 1923. 1,458,551

METAL MOLD FOR CONCRE TTTTTT KS June 12, 1923.

1,458,551 W. O. SEAT METAL MOLD FOR CONCRETE BLOCKS Filed March 20, 1920 2 Sheets-Sheet 2 Frq. 4

M W Y I) II 7 try i I /0 I} -||I a f' I II 5 1 j will MEI! I /J l l I 2 I! i T A; M l h /4 I i l 7.2- 57. 5: 2g l" v /7 INVENTOR I oa/for/Qea/ ATTO R N EY Patented June 12, 1923.

NITE STATES P woonronn o. SEAT, or NASHVILLE, TENNESSEE, Assrsnor.

NICHOLS, or NASHVILLE, TENNESSEE.

OF ONE-HALF TO JOHN METAL MOLD FOR CONCRETE BLOCKS.

-App1ication'fi1ec1 March 20, 1920. Serial No. 367,389.

T all whom it may concern:

Be it known that I, lVoonroRD O. SEAT,

a citizen of the United States, residing at Nashville, in the county of Davidson and State of Tennessee, have invented a new and useful Metal Mold for Concrete Blocks, of which the following is a specification.

This invention has reference to improvements in molds for making concrete blocks, and is designed more especially for the molding of blocks for use in a wall construction such as indicated in Letters Patent N 0. 1,046,029, granted December 3, 1912, upon an application filed by me.

In accordance with the present invention, the mold may be constructed of sheet steel or other suitable material so arranged that blocks are formed with grooves on opposite faces for anchoring means and, furthermore, have their exposed faces of some ornamental configuration, the mold being readily assembled and dismantled, while provision is made for the production of smaller blocks than those for which the mold is initially intended.

The invention will bebest understood from a consideration of the following detailed description, taken in connection with the accompanying drawings forming a part of this specification, with the further understanding that while the drawings show a practical form of the invention, the latter is not confined to any strict conformity with the showing of the drawings, but may be changes and modifications mark nomaterial departure from the salient features of the invention.

In the drawings, Fig. 1 is a mold box.

Fig. 2 is a perspective View of one of the division plates of the mold.

Fig. 3 is a perspective view of another division plate which may be used.

Fig. 4 is a perspective view showing a form of facing molding.

Fig. 5 is a perspective view of a block formed by the mold of Fig. 4.

Referring to the drawings, there is shown a multi-mold comprising side plates 1, a

bottom plate or pallet 2, and division plates 3, one of the latter being shown separately in Fig. 2, while there is also provided a supplemental division plate 4 to which reference will hereinafter be made.

s the side changed and modified so long as such perspective viewof a multi- The slide plates 1 are made preferably of rolled steel plate each formed with a central longitudinal bead 5 projecting from that face which forms the inner face of the side member of the mold when in molding position. At suitable intervals the opposite edges of each side plate 1 are notched as indicated at 6 to receive tongues Ton opposite corners of the division plate 3, while edges 8 of the plate 3 are intermediatelynotched as indicated at 9 tofit about the beads 5, and in line with the beads or otherwise located as may be desired the plate 3 is pierced by passages 10 having a purpose to be described. 'The' tongues 7 are each pierced by a passage 11, which when the division plates are in place with the tongues extending through the notches or recesses 6 areso located with respect to the outer faces of the sidemembers 1 that they may receive pins 11 for locking the side members and division plates together.

The division plate 4 has tongues 7* projecting from its end edges 8 and the plate 1S pierced bypassages 10 and 11 similar to the corresponding passages of the plate 1. Certain are slotted corresponding in length to the width of the tongues 7 and extend transversely of the side plates'l ping short of plates 1 so as portions of the side plates 1 the opposite edges of the to receive the tongues 7 of the plates 4 which may be used in conjunction with division plates 3 to form smaller blocks than are provided for by such division plates 3. It will be understood that the mold of Fig. 1 may have as many slots 12 as'may be desired, and these slots may be present in as many of the mold chambers of the mold of Fig.1 as may be desired, such mold in the showing of the drawings indicating but one of the chambers provided with slots 12 and the other chambers free from them, but the in-' vention is not confined to any particular arrangement in this respect.

When concrete is deposited in a mold such as described, rectangular blocks are produced each with grooves on opposite faces, and-these blocks may be built up in the form of walls with the grooved faces located top and bottom and with the grooves extending lengthwise of the wall to receive anchoring means as in the aforesaid Letters Patent. It is advisable to provide holes in the blocks as indicated at 12, these slots across the beads 5 and stopwhere meeting for dowel pins, or the formation of cement dowel pins in the laying of the blocks, and for this purpose the passages 10 .or 10, as the case may be, have pins 13 placed therein, one of these pins being shown in Fig. 1, so that when a block is cast not only does it have the grooves formed by the heads 5 but has sockets produced by the pins 13. i

It is often desirable to produce blocks with ornamental faces, such faces being those presented to view in the built wall, and for this purpose different arrangements may be employed. In Fig. 4, strips 14 are shown each having a rounded molding surface 15 and along one edge formed with a longitudinal flange 16, the strips 14 being so arranged that they may be assembled in conformity with the form of the mold with the corresponding edges of the side plates 1 and division plates 3 resting on the strips 14 against the flanges 16, and the strips 14: resting on the pallet 2. Now when cement or concrete is deposited in the mold, such as indicated in Fig. 4e, there results a block 17 shown in Fig. 5 having grooves 18 on opposite sides due to the presence of the beads 5, and sockets 19 due to the presence of the pins 18, while there is a face portion 20 of less area than the cross-section of the block and outstanding from the correspondin end of the block a distance equal to the thickness of the strips 14 from the point of engagement therewith of the mold to the pallet 2, and since in the particular showing of Fig. 1 the molding faces of the strips 14 are convex the block 17 has concaved portions 21 corresponding to the-molding strips.

What isclaimed is:

1. A mold for concrete blocks, comprising elongated sheet metal side plates, each with a longitudinal return bend projecting inv wardly from the inner face of the plate toward the opposite plate and forming a V- shaped bead intermediate of the width of the plate and of a length corresponding to the length of the plate, said plate having top and bottom. entering notches matching each other and spaced apart lengthwise of the plate to an extent agreeing with the thickness of the block to be produced, and

sheet metal division plates with recesses in the ends defining. corner tongues adapted to traverse the entering notches and said end with other upright slots intermediate of thematching, entering slots, division plates with tongues at the upper and lower corners defining recesses between them at the ends of the plates, and notches'intermediate of the height of the recesses and conforming to the cross sectional shape of the beads,

whereby the edges of the plates may fit snugly against the side plates and extend beyond the outer faces of the side plates for the reception of fastening means, and other division plates having end tongues intermediate of their height and adapted to traverse the upright slots to receive fastening means.

3. The combination with a pallet and a mold formed of side and division plates, with the latter substantially perpendicular to the side plates and dividing the mold into a plurality of molding'chambers, of face moldingstrips separate from the pallet and from the side and division mold and having edge portions shaped to receive andsustain the side plates ofthe mold in elevated spaced'relationto the pallet, and other face-molding strips separate from thepallet and adapted to be supported thereby and underlie and support the division plates of the mold in elevated spaced relation to the pallet, and means for connecting the ends of the division plates outside the side plates and above the face-molding strips, whereby blocks formed in the molds supported by the face-molding strips are of 100 greater thickness from the front to the rear In testmiony, that I claim the foregoing as my own, I have hereto affixed my signa- 105 turei WOODFORD O. SEAT.

plates of the 

